13823523 has 24 divisors (see below), whose sum is σ = 23212800. Its totient is φ = 7763184.

The previous prime is 13823503. The next prime is 13823531. The reversal of 13823523 is 32532831.

13823523 is a `hidden beast` number, since 138 + 2 + 3 + 523 = 666.

It is a Cunningham number, because it is equal to 3718²-1.

It is not a de Polignac number, because 13823523 - 2⁹ = 13823011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13823503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1858 + ... + 5576.

It is an arithmetic number, because the mean of its divisors is an integer number (967200).

Almost surely, 2^13823523 is an apocalyptic number.

13823523 is a deficient number, since it is larger than the sum of its proper divisors (9389277).

13823523 is a wasteful number, since it uses less digits than its factorization.

13823523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3791 (or 3788 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 13823523 is about 3717.9998655191. Note that the first 3 decimals coincide. The cubic root of 13823523 is about 239.9972395516.

The spelling of 13823523 in words is "thirteen million, eight hundred twenty-three thousand, five hundred twenty-three".